1、肾小体 (renal corpuscle) (1)血管球 Macula densa glomerulus) Juxtaglomerular cells Bowman's capsule Efferent arteriole (paretal layer) (2)肾小囊 (renal capsule) Bowman's capsule (visceral layer podocytes The parietal layer of Bowman,s capsule is composed of simple squamous whereas its visceral layer form podocytes. ultrafiltrate enters Bowman's(urinary) pace and leaves the renal corpuso urinary pole, via th convoluted tubule. The afferent lomerular arteriole enters and the Parietal layer efferent glomerular arteriole leaves the at its vascular pole, the Urinary pole g and the latter draining the glomerulus. The macula densa component of the distal tubule comes in close proximity to the juxtaglomerular cells of the afferent (and efferent)1、肾小体 （renal corpuscle） ⑴血管球 （glomerulus） ⑵肾小囊 （renal capsule）